That means your invoicing and billing, done via some system which has mobile application so you can write it from the site and take C.C. payment then and there.

No because depreciation is based on the purchase price of the property and cost of rehabs (costs you can prove on receipts/invoices with checks to prove payment).

Due to the appraisal and other factors, I had to terminate the deal.However, after a week, the bank that I was using is sending me invoices for their lawyers and other costs that they incurred when working on the deal.I certainly wasn’t anticipating them charging me for every little thing from their end.Is this normal practice?

You just pay maintenance invoice and receive checks from the PM is more costly.

@Amber Quote from @Amber WilliamsonWilliamson: ask the owner for a copy of the plumbing invoice and call and talk with the water company, they most likely will reduce the bill knowing that there was a leak, and they can clearly see that the normal consumption is the $80 once that was repaired.

Would I send an invoice each month to be paid along with the rent?

She then sent me an invoice of $17,000 that was neither part of the original contract nor part of the change order and told me if I don't pay it she will put a lien on my house.

Before I handed my properties over to property management, I used QuickBooks and would invoice my tenants with a link to pay by echeck.  

Columbia Gas in Ohio charged me for my tenant's last month of service by sending me an invoice with a new account number under my name to my home address. 

Attached was an invoice if I wanted to proceed with the replacement.